The JAST program office was established on 27th January 1994. It should develop the aircraft, the armament and the sensors, that would be needed for tactical future aircraft. The aim was a single family of aircraft that should replace multiple ageing aircraft types in the hangars of the United States and the United Kingdom. The aims of the Joint Strike Fighter design were: * Stealth abilities * Integrated avionics/sensors * Low unit cost * Low maintenance cost The JSF should be built in three variants: The following companies showed their concepts: